تقرير
Gravitational Wave-Induced Freeze-In of Fermionic Dark Matter
| العنوان: | Gravitational Wave-Induced Freeze-In of Fermionic Dark Matter |
|---|---|
| المؤلفون: | Maleknejad, Azadeh, Kopp, Joachim |
| سنة النشر: | 2024 |
| المجموعة: | Astrophysics General Relativity and Quantum Cosmology High Energy Physics - Phenomenology High Energy Physics - Theory |
| مصطلحات موضوعية: | High Energy Physics - Phenomenology, Astrophysics - Cosmology and Nongalactic Astrophysics, General Relativity and Quantum Cosmology, High Energy Physics - Theory |
| الوصف: | The minimal coupling of massless fermions to gravity does not allow for their gravitational production solely based on the expansion of the Universe. We argue that this changes in presence of realistic and potentially detectable stochastic gravitational wave backgrounds. We compute the resulting energy density of Weyl fermions at 1-loop using in--in formalism. If the initially massless fermions eventually acquire mass, this mechanism can explain the dark matter abundance in the Universe. Remarkably, it may be more efficient than conventional gravitational production of superheavy fermions. Comment: 6 pages, 2 figures |
| نوع الوثيقة: | Working Paper |
| URL الوصول: | http://arxiv.org/abs/2405.09723 |
| رقم الأكسشن: | edsarx.2405.09723 |
| قاعدة البيانات: | arXiv |
| الوصف غير متاح. |